Kathryn Hahn’s career is certainly in full swing. As she was busy promoting the upcoming comedy this weekend, Our Idiot Brother co-starring Paul Rudd and Elizabeth Banks, Kathryn opened up about her next film, Wanderlust. The film also co-stars Paul Rudd and two lovebirds: Jennifer Aniston and Justin Theroux. Find out more after the jump!

Considering Kathryn shot Our Idiot Brother, a comedy about an idealist who barges in on his three sisters,right before Wanderlust, the rhythm to her acting with Paul was already in full swing. She told OK!, “It was definitely an advantage working with Paul first because there was a shorthand that we had.”

So, as they filmed Wanderlust in Georgia, Kathryn says it was “so much fun.” She adds, “It was like probably my most favorite movie making experience. It was incredible, but with Our Idiot Brother I came in on the tail end, but with Wanderlust we were all like a big old commune.”

As for her thoughts on co-stars Jennifer and Justin’s budding romance? She remarks, “It’s adorable. I am very happy for them.” And in case you’re wondering how Jennifer was on set, especially with Justin around, Kathryn tells OK!, “She is so chill and she is so – she would hate to have anybody feel uncomfortable and get in the way of work.”

Our Idiot Brother opens in theaters on August 26; Wanderlust opens on October 7.